[oe-commits] [openembedded-core] 42/68: runqemu: clean up subprocess usage
git at git.openembedded.org
git at git.openembedded.org
Mon Jan 28 17:07:41 UTC 2019
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rpurdie pushed a commit to branch thud-next
in repository openembedded-core.
commit 4b5a4b718c027f54ef0660a731f11a9d249b4af8
Author: Ross Burton <ross.burton at intel.com>
AuthorDate: Fri Sep 21 16:11:32 2018 +0100
runqemu: clean up subprocess usage
Where possible pass lists instead of strings, don't use a subshell, and call
check*() instead of using Popen directly.
(From OE-Core rev: d2374623444752af1ad748ed36b68ea58f629bf6)
Signed-off-by: Ross Burton <ross.burton at intel.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808 at gmail.com>
---
scripts/runqemu | 63 ++++++++++++++++++++++++++-------------------------------
1 file changed, 29 insertions(+), 34 deletions(-)
diff --git a/scripts/runqemu b/scripts/runqemu
index 08f4cfe4..55cdd41 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -115,9 +115,9 @@ def check_tun():
raise RunQemuError("TUN control device %s is not writable, please fix (e.g. sudo chmod 666 %s)" % (dev_tun, dev_tun))
def check_libgl(qemu_bin):
- cmd = 'ldd %s' % qemu_bin
- logger.debug('Running %s...' % cmd)
- need_gl = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read().decode('utf-8')
+ cmd = ('ldd', qemu_bin)
+ logger.debug('Running %s...' % str(cmd))
+ need_gl = subprocess.check_output(cmd).decode('utf-8')
if re.search('libGLU', need_gl):
# We can't run without a libGL.so
libgl = False
@@ -398,7 +398,7 @@ class BaseConfig(object):
cmd = 'MACHINE=%s bitbake -e' % arg
logger.info('Running %s...' % cmd)
- self.bitbake_e = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read().decode('utf-8')
+ self.bitbake_e = subprocess.check_output(cmd, shell=True).decode('utf-8')
# bitbake -e doesn't report invalid MACHINE as an error, so
# let's check DEPLOY_DIR_IMAGE to make sure that it is a valid
# MACHINE.
@@ -838,10 +838,7 @@ class BaseConfig(object):
self.nfs_server = '192.168.7.1'
# Figure out a new nfs_instance to allow multiple qemus running.
- # CentOS 7.1's ps doesn't print full command line without "ww"
- # when invoke by subprocess.Popen().
- cmd = "ps auxww"
- ps = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read().decode('utf-8')
+ ps = subprocess.check_output(("ps", "auxww")).decode('utf-8')
pattern = '/bin/unfsd .* -i .*\.pid -e .*/exports([0-9]+) '
all_instances = re.findall(pattern, ps, re.M)
if all_instances:
@@ -881,17 +878,17 @@ class BaseConfig(object):
if not src:
raise RunQemuError("No NFS_DIR is set, and can't find %s or %s to extract" % (src1, src2))
logger.info('NFS_DIR not found, extracting %s to %s' % (src, dest))
- cmd = 'runqemu-extract-sdk %s %s' % (src, dest)
- logger.info('Running %s...' % cmd)
- if subprocess.call(cmd, shell=True) != 0:
+ cmd = ('runqemu-extract-sdk', src, dest)
+ logger.info('Running %s...' % str(cmd))
+ if subprocess.call(cmd) != 0:
raise RunQemuError('Failed to run %s' % cmd)
self.clean_nfs_dir = True
self.rootfs = dest
# Start the userspace NFS server
- cmd = 'runqemu-export-rootfs start %s' % self.rootfs
- logger.info('Running %s...' % cmd)
- if subprocess.call(cmd, shell=True) != 0:
+ cmd = ('runqemu-export-rootfs', 'start', self.rootfs)
+ logger.info('Running %s...' % str(cmd))
+ if subprocess.call(cmd) != 0:
raise RunQemuError('Failed to run %s' % cmd)
self.nfs_running = True
@@ -957,9 +954,9 @@ class BaseConfig(object):
except FileExistsError:
pass
- cmd = '%s link' % ip
- logger.debug('Running %s...' % cmd)
- ip_link = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read().decode('utf-8')
+ cmd = (ip, 'link')
+ logger.debug('Running %s...' % str(cmd))
+ ip_link = subprocess.check_output(cmd).decode('utf-8')
# Matches line like: 6: tap0: <foo>
possibles = re.findall('^[0-9]+: +(tap[0-9]+): <.*', ip_link, re.M)
tap = ""
@@ -984,8 +981,8 @@ class BaseConfig(object):
gid = os.getgid()
uid = os.getuid()
logger.info("Setting up tap interface under sudo")
- cmd = 'sudo %s %s %s %s' % (self.qemuifup, uid, gid, self.bindir_native)
- tap = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read().decode('utf-8').rstrip('\n')
+ cmd = ('sudo', self.qemuifup, str(uid), str(gid), self.bindir_native)
+ tap = subprocess.check_output(cmd).decode('utf-8').strip()
lockfile = os.path.join(lockdir, tap)
self.lock = lockfile + '.lock'
self.acquire_lock()
@@ -1020,7 +1017,7 @@ class BaseConfig(object):
if self.get('QB_NET') == 'none':
return
if sys.stdin.isatty():
- self.saved_stty = subprocess.check_output("stty -g", shell=True).decode('utf-8')
+ self.saved_stty = subprocess.check_output(("stty", "-g")).decode('utf-8').strip()
self.network_device = self.get('QB_NETWORK_DEVICE') or self.network_device
if self.slirp_enabled:
self.setup_slirp()
@@ -1134,7 +1131,7 @@ class BaseConfig(object):
if not qemu_system:
raise RunQemuError("Failed to boot, QB_SYSTEM_NAME is NULL!")
- qemu_bin = '%s/%s' % (self.bindir_native, qemu_system)
+ qemu_bin = os.path.join(self.bindir_native, qemu_system)
# It is possible to have qemu-native in ASSUME_PROVIDED, and it won't
# find QEMU in sysroot, it needs to use host's qemu.
@@ -1172,7 +1169,7 @@ class BaseConfig(object):
if self.serialstdio:
if sys.stdin.isatty():
- subprocess.check_call("stty intr ^]", shell=True)
+ subprocess.check_call(("stty", "intr", "^]"))
logger.info("Interrupt character is '^]'")
first_serial = ""
@@ -1236,20 +1233,19 @@ class BaseConfig(object):
logger.info("Cleaning up")
if self.cleantap:
- cmd = 'sudo %s %s %s' % (self.qemuifdown, self.tap, self.bindir_native)
- logger.debug('Running %s' % cmd)
- subprocess.check_call(cmd, shell=True)
+ cmd = ('sudo', self.qemuifdown, self.tap, self.bindir_native)
+ logger.debug('Running %s' % str(cmd))
+ subprocess.check_call(cmd)
self.release_lock()
if self.nfs_running:
logger.info("Shutting down the userspace NFS server...")
- cmd = "runqemu-export-rootfs stop %s" % self.rootfs
- logger.debug('Running %s' % cmd)
- subprocess.check_call(cmd, shell=True)
+ cmd = ("runqemu-export-rootfs", "stop", self.rootfs)
+ logger.debug('Running %s' % str(cmd))
+ subprocess.check_call(cmd)
if self.saved_stty:
- cmd = "stty %s" % self.saved_stty
- subprocess.check_call(cmd, shell=True)
+ subprocess.check_call(("stty", self.saved_stty))
if self.clean_nfs_dir:
logger.info('Removing %s' % self.rootfs)
@@ -1291,10 +1287,9 @@ class BaseConfig(object):
if result and os.path.exists(result):
return result
- cmd = 'bitbake qemu-helper-native -e'
- logger.info('Running %s...' % cmd)
- out = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE)
- out = out.stdout.read().decode('utf-8')
+ cmd = ('bitbake', 'qemu-helper-native', '-e')
+ logger.info('Running %s...' % str(cmd))
+ out = subprocess.check_output(cmd).decode('utf-8')
match = re.search('^STAGING_BINDIR_NATIVE="(.*)"', out, re.M)
if match:
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